• One-piece cast iron housings with single output cover design, CNC machined for precise component fit and alignment.
• Factory-filled with premium Mobil Glygoyle 460 polyalkalene glycol lubricant.
• Large oil capacity provides positive splash lubrication and superior cooling capability.
• Viton® double lip seals provide extended life through increased resistance to high temperature, abrasion and chemicals.
• The unique quill seal guard protects the input seal from damage during motor installation.
• Bronze worm gear chill cast from high quality bronze for maximum strength, lubricity and superior life.
• Oversized high-speed bearings, positively retained for frequent reversing and start/stop cycles.Tapered roller bearings on output shaft for high overhung and thrust load capacities.
• All units are 100% run and leak tested at the factory to insure that you receive the highest quality product.
• Ultimate application flexibility with all-angle mounting provisions, the widest selection of accessory bases and flanges and the largest selection of stock reducer styles.
• Mounting dimensions are interchangeable with most industry standard reducers.

Dimensions

L1	14.3 in
L	10.88 in
B	13
BE1	0.5 in
O	4.78 in
G	2.91
D	5.12
N	9.06
AK	8.5
J	11 in
Center Distance (in)	5.25 in
AJ	7.25
F	5.81
T	2
TAP Depth	1.25 in
U	1.25 in
I	7.5 in
A	7.19
O*	4.53 in
BF	0.53
H-Tap size	5/8-11 UNC in
BD	9
K	5.5 in
C	14 in

Technical Specifications

Input RPM	1,750
Output Key	1/2 X 3.50
Reducer Style	Worm - Right Angle
Output HP	12.98
Input HP @ 1750 RPM	14.56
Product Line	GR Series - Ironman Worm Gear Reducers
Input HP	15.56
Center Distance (in)	5.25
Output RPM	87
Series	GR Series - Ironman Worm Gear Reducers
Assembly	BM-D
Output Style	D
Series Style	GR-BM-D
Service Factor	1
Frame Size	210TC
Thrust Rating - output shaft	3412
Output Shaft Assembly Code	D
Mounting Style	Base
Input Bore (C Face)	1.375
Shaft Seal Material	Viton
Overhung Load	3,560
Motor Frame Size	210
Series Code	GR
Output Shaft Orientation	LR
Input Diameter (in)	1.25 in
Ratio	20:1
Gear Type	Worm
Output Diameter (in)	2 in
Reducer	Worm - Right Angle
Model Code	BM852
No. of Gear Reductions	Single
Ratio Range	20:1
Input Style	Flexible Coupling Input
Product Type	Right Angle
Input Keyway (C Face)	5/16 x 5/32
Input Keyway	1/4 X 3.00 in
Reduction	Single
Output Shaft Direction	Double
Output Shaft	Solid Shaft
Output Torque Rating (in-lb)	9351 in/lbs
Overhung Load Rating (Output Shaft(lb))	3,560 lb
Housing Material	Cast Iron

General Specifications

UPC	690310031483
Weight	254.00 LB